f=open(r'//eval和ast.literal_eval/important_file').read()
print(f)
__import__('os').system('dir')
#这一行会把important_file这个文件给删除了！慎重
__import__('os').system('rm -rf /home/SENSETIME/liangchen.vendor/git/liangchen_test/eval和ast.literal_eval/important_file')